Fine structure and the localization of the nitrite oxidizing system inNitrobacter winogradskyl
Tóm tắt
The existence of a membrane system located at one of the poles of the cell is confirmed in the case ofNitrobacter winogradskyi. Additional information on the structure of this system is presented. Elementary particles with diameters of 90 – 100 Å are embedded on a layer of membrane protein. Identification of the membrane system as the location of nitrite oxidation was achieved by a combination of differential spectrophotometry and electron microscopic study of membrane fragments separated by density gradient centrifugation. The cytochrome chain responsible for nitrite oxidation appears to be located in fragments of the membrane system. Prominent morphological features ofNitrobacter winogradskyi are the high contents in poly-β-hydroxybutyrate and polyphosphate granules.
Tài liệu tham khảo
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